Catheter and introducer catheter having torque transfer layer and method of manufacture

a technology of introducer catheter and torque transfer layer, which is applied in the field of introducer catheters and catheters having a torque transfer layer, can solve the problems of relatively large distances of steering force transmission, and the thin-walled introducer is more likely to collapse upon itself, so as to achieve and kink resistance. , good pushability, torqueability, flexibility and kink resistan

Active Publication Date: 2009-01-22
ST JUDE MEDICAL ATRIAL FIBRILLATION DIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented design improves upon existing designs by providing better pushing ability, torsional rigidity, flexibility, and crush-resistance compared to older versions without sacrificing certain features like pull strengths.

Problems solved by technology

This patents describes how current methods involve inserting a special type of cathode ray scope called a "guidewire," along with a separate insertion tool - referred to collectively as a "sheathed introducer." These techniques can lead to complications during surgery due to difficulties navigating around obstacles caused by bending or twisting movements associated therewith. Additionally, some existing inserter tools require multiple steps before reaching the desired destination point inside the patient without losing stability.

Method used

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  • Catheter and introducer catheter having torque transfer layer and method of manufacture
  • Catheter and introducer catheter having torque transfer layer and method of manufacture
  • Catheter and introducer catheter having torque transfer layer and method of manufacture

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Embodiment Construction

[0025]The present invention provides a catheter and a large bore introducer catheter suitable for use in the human vasculature for known medical procedures, such as cardiac ablation. For purposes of description, the present invention will be described in connection with a flat wire guided, or steerable, introducer catheter. It is contemplated, however, that the described features may be incorporated into any number of catheters or introducer catheters as would be appreciated by one of ordinary skill in the art. The large bore introducer catheter is comprised of a combination of components and manufactured by either a reflow process or an extrusion process, which provide the surprising benefits of allowing for introducer catheters having an internal diameter of at least about 6 French while maintaining the desirable improved properties of pushability, torquability, and flexibility, for outer diameters of sufficient size for navigation of cardiac vasculature.

[0026]FIG. 1 is a perspective

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Abstract

The instant invention relates generally to catheters and to introducer catheters used to help deliver catheters or other medical devices to locations within the human body. In particular, the instant invention relates to large diameter catheters and introducer catheters having a torque transfer layer that includes at least two flat wires braided into a wire mesh. The flat wires have a width of at least about 0.007 inches and a depth of at least about 0.003 inches. The lumen diameter of the catheter is at least about 6 French. The torque transfer layer provides increased strength, flexibility, and kink resistance.

Description

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Claims

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Application Information

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Owner ST JUDE MEDICAL ATRIAL FIBRILLATION DIV
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